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Co-Fe Nanoparticles Wrapped on N-Doped Graphitic Carbons as Highly Selective CO₂ Methanation Catalysts.

ABSTRACT: Pyrolysis of chitosan containing various loadings of Co and Fe renders Co-Fe alloy nanoparticles supported on N-doped graphitic carbon. Transmission electron microscopy (TEM) images show that the surface of Co-Fe NPs is partially covered by three or four graphene layers. These Co-Fe@(N)C samples catalyze the Sabatier CO₂ hydrogenation, increasing the activity and CH₄ selectivity with the reaction temperature in the range of 300-500 °C. Under optimal conditions, a CH₄ selectivity of 91% at an 87% CO₂ conversion was reached at 500 °C and a space velocity of 75 h^-1 under 10 bar. The Co-Fe alloy nanoparticles supported on N-doped graphitic carbon are remarkably stable and behave differently as an analogous Co-Fe catalyst supported on TiO₂.

SUBMITTER: Jurca B

PROVIDER: S-EPMC9131422 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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Co-Fe Nanoparticles Wrapped on N-Doped Graphitic Carbons as Highly Selective CO2 Methanation Catalysts.

Jurca Bogdan B Peng Lu L Primo Ana A Gordillo Alvaro A Parvulescu Vasile I VI García Hermenegildo H

ACS applied materials & interfaces 20210730 31

Pyrolysis of chitosan containing various loadings of Co and Fe renders Co-Fe alloy nanoparticles supported on N-doped graphitic carbon. Transmission electron microscopy (TEM) images show that the surface of Co-Fe NPs is partially covered by three or four graphene layers. These Co-Fe@(N)C samples catalyze the Sabatier CO2 hydrogenation, increasing the activity and CH4 selectivity with the reaction temperature in the range of 300-500 °C. Under optimal conditions, a CH4</ ...[more]

PMID: 34328713

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